The cat who robbed a bank - Lilian Jackson Braun

As September arrives in Moose County plans are rife and hopes are high. On top of celebrating its first annual Mark Twain Festival, Pickaxe City is hosting the tri-county Scottish Gathering and Highland Games. And, most exciting of all, the distinguished celebrity, Mr Delacamp, is paying a visit, setting female hearts aflutter everywhere. So when Delacamp is suffocated to death, everyone is devastated. Koko seems to have some feline insight that sets Jim Qwilleran's moustache twitching... The most unlikely, most unusual, most delightful team in detective fiction!